Mean phosphorus– and arsenic–sulphur bond enthalpies in diethyldithiocarbamate chelate complexes
作者:Claudio Airoldi、Antonio G. de Souza
DOI:10.1039/dt9870002955
日期:——
The standard enthalpies of formation at 298.15 K of crystalline tris(diethyldithiocarbamate) compounds of P and As were determined by solution-reaction calorimetry, giving –304.5 ± 7.6 and –104.5 ± 7.6 kJ mol–1 respectively. The enthalpies of sublimation, 143 ± 2 and 124 ± 3 kJ mol–1, respectively, were estimated. From these values, the enthalpies of formation of both compounds in the gaseous phase
通过溶液反应量热法测定了P和As的结晶三(二乙基二硫代氨基甲酸酯)化合物在298.15 K时形成的标准焓,分别为–304.5±7.6和–104.5±7.6 kJ mol –1。估计升华焓分别为143±2和124±3 kJ mol –1。从这些值推导出气相中两种化合物的形成焓。计算了均溶和杂溶的磷-砷-硫键-焓参数。磷的较大值被解释为所涉及原子的d轨道更好重叠的结果。